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Phone Samsung SGH-X640 Samsung SGH-A657 Motorola v60t Motorola i450 / i455
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? ? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
96 x 64 pixels 130 x 130 pixels
LCD (STN)
Display Refresh ? ? ? ?
Battery 800 mAh 1,420 mAh ? ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes - - -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - - -
Front Camera - - - -
Weight 3 oz
(85g)
4.34 oz
(123g)
4.3 oz
(122g)
4.5 oz
(128g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.53" x 2.05" x 0.77"
(115 x 52 x 19.6 mm)
3.42" x 1.77" x 1.07"
(87 x 45 x 27.2 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
Form Factor Clamshell Slab Clamshell Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

TDMA: 850, 1900

AMPS: 850

iDEN: 800

Data Technology GPRS HSDPA 3.6 - -
Features 
Flashlight - Yes - -
GPS / Location - Yes - Yes
Ruggedized - Yes - -
Accessibility
Hearing Aid Compatible - - - Yes
M3 (mostly compatible)
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - Yes - Yes
Alerts
Extra Display - - Yes Yes
Ringer Profiles - - - Yes
Connectivity
Bluetooth - Yes - -
USB - Yes Yes Yes
Contacts
Picture ID Yes Yes - Yes
Ringer ID Yes Yes - Yes
Voice Dialing - - Yes Yes
Customization
Custom Graphics Yes Yes - Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers - Yes - Yes *
Data & Network
Data Tethering - Yes - Yes
WAP / Web Browser Yes Yes - Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes
Memory
Memory Card Slot - Yes - -
Messaging
Email Client - Yes - -
EMS / Picture Messaging Yes - - -
Instant Messaging - Yes - -
MMS Yes Yes - Yes
Text Messaging Templates Yes Yes - Yes
Music
Music Player - Yes - -
Productivity
Alarm Yes Yes Yes -
Calculator Yes Yes - -
Calendar Yes Yes Yes Yes
To-Do List Yes Yes - -
Voice Memo Yes Yes Yes Yes
Software
Games Yes Yes - Yes
Java (J2ME) Yes Yes - Yes
Voice
Headset Jack (2.5 mm) Yes - Yes Yes
Push-To-Talk - Yes - Yes
Speaker Phone Yes Yes - Yes
  * Some versions only
  Samsung SGH-X640 Samsung SGH-A657 Motorola v60t Motorola i450 / i455
  X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 Samsung SGH-A657 Motorola v60t Motorola i450 / i455

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